Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. 
 
This vulnerability is due to lack of proper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending a crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart causing a a denial of service (DoS) condition.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00094.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Cyber Vision unknown
Version Status Constraints
3.0.0 affected
—
3.0.2 affected
—
3.0.3 affected
—
3.0.1 affected
—
3.1.0 affected
—
3.0.4 affected
—
3.1.1 affected
—
3.1.2 affected
—
3.2.0 affected
—
3.0.5 affected
—
3.2.1 affected
—
3.0.6 affected
—
3.2.2 affected
—
3.2.3 affected
—
3.2.4 affected
—
4.0.0 affected
—
4.0.1 affected
—
4.0.2 affected
—
4.0.3 affected
—
4.1.0 affected
—
4.1.1 affected
—
4.1.2 affected
—
4.1.3 affected
—
4.1.4 affected
—
4.2.0 affected
—
4.2.1 affected
—
4.1.5 affected
—
4.2.2 affected
—
4.2.X affected
—
4.2.3 affected
—
4.2.4 affected
—
4.2.6 affected
—
4.1.6 affected
—
4.3.0 affected
—
4.3.1 affected
—
4.3.2 affected
—
4.3.3 affected
—
4.4.0 affected
—
4.4.1 affected
—
4.4.2 affected
—
4.4.3 affected
—
4.1.7 affected
—
5.0.0 affected
—
5.0.1 affected
—
5.0.2 affected
—
5.1.0 affected
—
5.1.1 affected
—
5.1.2 affected
—
5.1.3 affected
—
5.2.0 affected
—
5.2.1 affected
—
5.3.0 affected
—
5.3.1 affected
—
Cisco Cisco Secure Firewall Threat Defense (FTD) Software unknown
Version Status Constraints
7.2.0 affected
—
7.2.0.1 affected
—
7.2.1 affected
—
7.3.0 affected
—
7.2.2 affected
—
7.2.3 affected
—
7.3.1 affected
—
7.2.4 affected
—
7.2.5 affected
—
7.2.4.1 affected
—
7.3.1.1 affected
—
7.4.0 affected
—
7.2.5.1 affected
—
7.4.1 affected
—
7.2.6 affected
—
7.4.1.1 affected
—
7.2.7 affected
—
7.2.5.2 affected
—
7.3.1.2 affected
—
7.2.8 affected
—
7.6.0 affected
—
7.4.2 affected
—
7.2.8.1 affected
—
7.4.2.1 affected
—
7.2.9 affected
—
7.7.0 affected
—
7.4.2.2 affected
—
7.2.10 affected
—
7.6.1 affected
—
7.4.2.3 affected
—
7.6.2 affected
—
7.7.10 affected
—
7.6.2.1 affected
—
7.7.10.1 affected
—
7.4.2.4 affected
—
7.2.10.2 affected
—
7.4.3 affected
—
Cisco Cisco UTD SNORT IPS Engine Software unknown
Version Status Constraints
17.12.1a affected
—
17.12.2 affected
—
17.13.1a affected
—
17.12.3 affected
—
17.14.1a affected
—
17.12.4 affected
—
17.12.3a affected
—
17.15.1a affected
—
17.16.1a affected
—
17.12.4a affected
—
17.15.2c affected
—
17.12.4b affected
—
17.15.2a affected
—
17.12.5 affected
—
17.17.1 affected
—
17.12.5a affected
—
17.15.3a affected
—
17.15.3 affected
—
17.12.5b affected
—
17.12.5c affected
—
17.15.4 affected
—
17.18.1 affected
—
17.18.1a affected
—
17.12.6 affected
—
17.15.4c affected
—
17.12.5d affected
—
17.18.2 affected
—

No data.

No data.

Vendor Product Confidence Versions
Cisco Cisco Utd Snort Ips Engine Software 100%
Version Status Scheme Platform
17.12.1a
 affected generic —
17.12.2
 affected semver —
17.13.1a
 affected generic —
17.12.3
 affected semver —
17.14.1a
 affected generic —
17.12.4
 affected semver —
17.12.3a
 affected generic —
17.15.1a
 affected generic —
17.16.1a
 affected generic —
17.12.4a
 affected generic —
17.15.2c
 affected generic —
17.12.4b
 affected generic —
17.15.2a
 affected generic —
17.12.5
 affected semver —
17.17.1
 affected semver —
17.12.5a
 affected generic —
17.15.3a
 affected generic —
17.15.3
 affected semver —
17.12.5b
 affected generic —
17.12.5c
 affected generic —
17.15.4
 affected semver —
17.18.1
 affected semver —
17.18.1a
 affected generic —
17.12.6
 affected semver —
17.15.4c
 affected generic —
17.12.5d
 affected generic —
17.18.2
 affected semver —
Cisco Cyber Vision 86%
Version Status Scheme Platform
3.0.0
 affected semver —
3.0.2
 affected semver —
3.0.3
 affected semver —
3.0.1
 affected semver —
3.1.0
 affected semver —
3.0.4
 affected semver —
3.1.1
 affected semver —
3.1.2
 affected semver —
3.2.0
 affected semver —
3.0.5
 affected semver —
3.2.1
 affected semver —
3.0.6
 affected semver —
3.2.2
 affected semver —
3.2.3
 affected semver —
3.2.4
 affected semver —
4.0.0
 affected semver —
4.0.1
 affected semver —
4.0.2
 affected semver —
4.0.3
 affected semver —
4.1.0
 affected semver —
4.1.1
 affected semver —
4.1.2
 affected semver —
4.1.3
 affected semver —
4.1.4
 affected semver —
4.2.0
 affected semver —
4.2.1
 affected semver —
4.1.5
 affected semver —
4.2.2
 affected semver —
4.2.X
 affected generic —
4.2.3
 affected semver —
4.2.4
 affected semver —
4.2.6
 affected semver —
4.1.6
 affected semver —
4.3.0
 affected semver —
4.3.1
 affected semver —
4.3.2
 affected semver —
4.3.3
 affected semver —
4.4.0
 affected semver —
4.4.1
 affected semver —
4.4.2
 affected semver —
4.4.3
 affected semver —
4.1.7
 affected semver —
5.0.0
 affected semver —
5.0.1
 affected semver —
5.0.2
 affected semver —
5.1.0
 affected semver —
5.1.1
 affected semver —
5.1.2
 affected semver —
5.1.3
 affected semver —
5.2.0
 affected semver —
5.2.1
 affected semver —
5.3.0
 affected semver —
5.3.1
 affected semver —
Cisco Secure Firewall Threat Defense 100%
Version Status Scheme Platform
7.2.0
 affected semver —
7.2.0.1
 affected generic —
7.2.1
 affected semver —
7.3.0
 affected semver —
7.2.2
 affected semver —
7.2.3
 affected semver —
7.3.1
 affected semver —
7.2.4
 affected semver —
7.2.5
 affected semver —
7.2.4.1
 affected generic —
7.3.1.1
 affected generic —
7.4.0
 affected semver —
7.2.5.1
 affected generic —
7.4.1
 affected semver —
7.2.6
 affected semver —
7.4.1.1
 affected generic —
7.2.7
 affected semver —
7.2.5.2
 affected generic —
7.3.1.2
 affected generic —
7.2.8
 affected semver —
7.6.0
 affected semver —
7.4.2
 affected semver —
7.2.8.1
 affected generic —
7.4.2.1
 affected generic —
7.2.9
 affected semver —
7.7.0
 affected semver —
7.4.2.2
 affected generic —
7.2.10
 affected semver —
7.6.1
 affected semver —
7.4.2.3
 affected generic —
7.6.2
 affected semver —
7.7.10
 affected generic —
7.6.2.1
 affected generic —
7.7.10.1
 affected generic —
7.4.2.4
 affected generic —
7.2.10.2
 affected generic —
7.4.3
 affected semver —

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Project Subscriptions

Vendors Products
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Cisco Utd Snort Ips Engine Software Subscribe
Cyber Vision Subscribe
Secure Firewall Threat Defense Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed cve-icon cve-icon
History

Thu, 05 Mar 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco cisco Utd Snort Ips Engine Software
Cisco cyber Vision
Cisco secure Firewall Threat Defense
Vendors & Products Cisco
Cisco cisco Utd Snort Ips Engine Software
Cisco cyber Vision
Cisco secure Firewall Threat Defense

Wed, 04 Mar 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 04 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
Description Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.    This vulnerability is due to lack of proper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending a crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart causing a a denial of service (DoS) condition.
Title Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability
Weaknesses CWE-369
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-03-04T21:32:46.370Z

Reserved: 2025-10-08T11:59:15.356Z

Link: CVE-2026-20057

cve-icon Vulnrichment

Updated: 2026-03-04T21:32:41.238Z

cve-icon NVD

Status : Received

Published: 2026-03-04T18:16:20.320

Modified: 2026-03-04T18:16:20.320

Link: CVE-2026-20057

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-05T09:06:17Z

Weaknesses